(function (document) {
    'use strict';


    function $(selector){
        return document.querySelector(selector);
    }

    window.addEventListener('WebComponentsReady', function () {

        var mathInput = $('#mathInput');
        var mathButton = $('#mathButton');

        mathInput.addEventListener('pointerdown', function () {
            $('.write-here').setAttribute('hidden', 'true');
        });
    });

})(document);
